JP6947030B2 - Display device and display system - Google Patents

Description

The present invention relates to a display device and a display system that display information three-dimensionally.

In a virtual secondary surveillance radar used for checking the operation status of an aircraft, information about an aircraft flying in a three-dimensional space is displayed on a two-dimensional radar screen. Therefore, considerable training is required to understand the information displayed on the radar screen. Even if the radar screen is configured with a large display so that it can be viewed by a large number of people, sharing the information unless all the people who refer to the display have the skills to understand the information displayed on the radar screen. Can't.

Patent Document 1 discloses a three-dimensional display device that displays a three-dimensional stereoscopic image by independently changing the brightness of the two-dimensional images displayed on a plurality of display surfaces. The device of Patent Document 1 includes a plurality of display devices arranged at different depth positions when viewed from an observer. At least one of the plurality of display devices has a transparent screen that selectively reflects or diffuses a specific polarized light, such as a holographic transparent screen. The observer can recognize the three-dimensional stereoscopic image by looking at the display device from the transparent screen side.

Patent Document 2 discloses a back projection type display device using a laser light source. When the laser beam contains the three primary colors of red, green, and blue, the screen of the apparatus of Patent Document 2 is a normal screen that diffuses and transmits the laser beam. On the other hand, when the laser light has a specific wavelength of about 405 nanometers, the screen of the apparatus of Patent Document 2 has fluorescence having a phosphor region that generates red, green, and blue light using the laser light as excitation light. It becomes a screen.

Non-Patent Document 1 discloses a desktop display device that changes the surface shape three-dimensionally. The apparatus of Non-Patent Document 1 arranges a plurality of pins whose heights can be changed on a tabletop, and changes the surface shape three-dimensionally by independently changing the heights of the pins. Further, the apparatus of Non-Patent Document 1 can not only express a three-dimensional surface shape, but also cover the upper end side of a plurality of pins with a stretchable sheet and project information on the sheet.

Japanese Unexamined Patent Publication No. 2011-128633 International Publication No. 2014/002511

D. Leethinger and H. Ishii, "Relief: A Scalable Activated Shipplay", [online], MIT Media Lab, [Search June 19, 2015], Internet <URL: http: // tmg-trackr. media. mit. edu / publicmedia / Papers / 432-Relief% 20A% 20Scalable% 20Actured / Public / PDF

According to the device of Patent Document 1, information in a three-dimensional space can be displayed more three-dimensionally as compared with a general three-dimensional display device. However, the device of Patent Document 1 has a problem that it is difficult for the observer to intuitively grasp the three-dimensional space from the displayed information because the viewpoint of the observer is limited to one direction. Further, even if the screen of Patent Document 1 is replaced with the fluorescent screen of Patent Document 2, the above-mentioned problems are not solved.

According to the apparatus of Non-Patent Document 1, information can be projected on a sheet in which a three-dimensional surface shape is expressed, so that it is easier to grasp the three-dimensional space more intuitively than a two-dimensional screen. However, although the device of Non-Patent Document 1 is suitable for expressing the surface shape of an object, there is a problem that it is difficult to intuitively grasp the three-dimensional positional relationship between the objects.

An object of the present invention is to provide a display device capable of intuitively grasping a three-dimensional positional relationship between objects in order to solve the above-mentioned problems.

The display device of the present invention includes a screen composed of subscreens composed of a plurality of transparent sheets in which phosphors emitted by light of a specific wavelength are dispersed, a light source, and a screen. A plurality of projection devices including a display surface for displaying a phase distribution for displaying desired display information, and a plurality of projection devices provided corresponding to each of a plurality of subscreens, and a desired screen. It is provided with a control device that controls the projection device so as to project the display information of.

The display system of the present invention uses a management device that acquires observation data in a specific range, extracts display target data related to the display target from the acquired observation data, and transmits the extracted display target data, and light of a specific wavelength. A screen composed of sub-screens composed of a plurality of transparent sheets in which luminescent phosphors are dispersed are arranged at predetermined intervals, and a display for displaying a phase distribution for displaying desired display information on the screen. A control that has a spatial modulation element including a surface and a light source, and controls a plurality of projection devices provided corresponding to each of a plurality of subscreens, and a projection device so as to project desired display information on the screen. It is provided with a device, receives display target data from a management device, and displays desired display information based on the received display target data.

According to the present invention, it is possible to provide a display device capable of intuitively grasping a three-dimensional positional relationship between objects.

It is a perspective view of the display device which concerns on 1st Embodiment of this invention. It is a side view of the display device which concerns on 1st Embodiment of this invention. It is a block diagram which shows the structure of the projection device of the display device which concerns on 1st Embodiment of this invention. It is a conceptual diagram which shows the optical structure of the projection device of the display device which concerns on 1st Embodiment of this invention. It is a block diagram which shows the structure of the control device of the display device which concerns on 1st Embodiment of this invention. It is a side view of the display device which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the structure of the control device of the display device which concerns on 2nd Embodiment of this invention. It is a side view of the modification of the display device which concerns on 2nd Embodiment of this invention. It is a perspective view of the display device which concerns on 3rd Embodiment of this invention. It is a side view of the display device which concerns on 3rd Embodiment of this invention. It is a conceptual diagram which shows the structure of the stereoscopic display part of the display device which concerns on 3rd Embodiment of this invention. It is a conceptual diagram which shows an example of the drive part for changing the surface shape of the 3D display part of the display device which concerns on 3rd Embodiment of this invention. It is a block diagram which shows the structure of the control device of the display device which concerns on 3rd Embodiment of this invention. It is a side view of the modification of the display device which concerns on 3rd Embodiment of this invention. It is a perspective view of the display device which concerns on 4th Embodiment of this invention. It is a side view of the display device which concerns on 4th Embodiment of this invention. It is a block diagram which shows the structure of the control device of the display device which concerns on 4th Embodiment of this invention. It is a perspective view of the modification of the display device which concerns on 4th Embodiment of this invention. It is a side view of the display device which concerns on 5th Embodiment of this invention. It is a conceptual diagram which shows an example of the mobile stage included in the modification of the display device which concerns on 5th Embodiment of this invention. It is a perspective view of the display device which concerns on 6th Embodiment of this invention. It is a conceptual diagram which shows the structure of the interface device formed in the display device which concerns on 6th Embodiment of this invention. It is a conceptual diagram which shows the structure of the image pickup apparatus of the display apparatus which concerns on 6th Embodiment of this invention. It is a block diagram which shows the structure of the control device of the display device which concerns on 6th Embodiment of this invention. It is a block diagram which shows the structure of the operation recognition part included in the control device of the display device which concerns on 6th Embodiment of this invention. It is a perspective view of the display device which concerns on 7th Embodiment of this invention. It is a side view of the display device which concerns on 7th Embodiment of this invention. It is a conceptual diagram which shows an example which projects the projected light over the whole subscreen using a general projection optical system. It is a conceptual diagram which shows an example which projects the projected light over the whole subscreen using the projection optical system which considered distortion. It is a perspective view of the display device of the modification 1 which concerns on 7th Embodiment of this invention. It is a perspective view of the display device of the modification 2 which concerns on 7th Embodiment of this invention. It is a perspective view of the display device of the modification 3 which concerns on 7th Embodiment of this invention. It is a block diagram which shows the structure of the display system which concerns on 8th Embodiment of this invention. It is a block diagram which shows the structure of the management apparatus of the display system which concerns on 8th Embodiment of this invention. It is a block diagram which shows an example of the hardware configuration which realizes the control device of the display device which concerns on each embodiment of this invention. It is a conceptual diagram which shows an example of the use scene of the display device which concerns on each embodiment of this invention. It is a conceptual diagram which shows an example of the use scene of the display device which concerns on each embodiment of this invention. It is a conceptual diagram which shows an example of the use scene of the display device which concerns on each embodiment of this invention.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. However, although the embodiments described below have technically preferable limitations for carrying out the present invention, the scope of the invention is not limited to the following. In all the drawings used in the following embodiments, the same reference numerals are given to the same parts unless there is a specific reason.

(First Embodiment)
First, the display system 1 according to the first embodiment of the present invention will be described with reference to the drawings.

1 and 2 are conceptual diagrams of a display system 1 according to an embodiment of the present invention. FIG. 1 shows a perspective view, and FIG. 2 shows a side view.

The display system 1 according to the present embodiment includes a plurality of projection devices 10 to 1, 3, a control device 20, and a screen 30. The screen 30 includes a plurality of subscreens 31-1 to 3. In the following description, when it is not necessary to distinguish between the plurality of projection devices 10-1 to 3 and the plurality of subscreens 31 to 1, 3, they are simply described as the projection device 10 and the subscreen 31. Sometimes.

In the present embodiment, an example including three projection devices 10 to 1 to 3 and three sub screens 31 to 1 to 3 will be described, but the number of projection devices 10 and sub screens 31 may be less than three. , May be more than three. Further, in the present embodiment, a configuration example in which one projection device 10 is provided on each sub-screen 31 is shown, but two or more projection devices may be provided on any one of the sub-screens 31. Further, a sheet or object different from the subscreens 31-1 to 3 may be arranged above the uppermost subscreen 31-1 or below the lowermost subscreen 31-3.

The projection device 10 projects desired display information on the screen 30. The projection device 10 may project light in a visible region, or may project light in an invisible region in an ultraviolet region or an infrared region.

In the present embodiment, it is preferable to use a phase modulation type projector as the projection device 10. The phase modulation type projector is focus-free and does not require focus adjustment. Therefore, even if the light is projected at a shallow angle as shown in FIGS. 1 and 2, the image is not blurred depending on the display position. Further, the phase modulation type projector can be miniaturized because a clear image can be obtained with low power by concentrating the light only on the display portion.

The projection device 10 is arranged in association with any of the plurality of subscreens 31-1 to 3. In the example of FIG. 1, the projection device 10-1 is associated with the subscreen 31-1, the projection device 10-2 is associated with the subscreen 31-2, and the projection device 10-3 is associated with the subscreen 31-3. The projection devices 10 to 1 to 3 are fixed to the sub screens 31 to 1 to 3 by the supports 41 to 1 to 3. If the positional relationship of the projection devices 10 to 1 to 3 with respect to the sub screens 31 to 1 to 3 is fixed by some method, the projection devices 10 to 1 to 3 are connected to the sub screen 31 by the supports 41 to 1 to 3. It does not have to be fixed at -1 to 3.

The plurality of projection devices 10 may be configured to project light having the same wavelength, or may be configured to project light having different wavelengths.

In the display device 1 according to the present embodiment, even if the light has the same wavelength, different colors are displayed depending on the type of phosphors dispersed in the subscreen 31, so that the color of the light projected from the projection device 10 is displayed. Is not directly developed on the sub-screen 31. In order to prevent the reflected light of the light projected on the sub-screen 31 and the color of the image displayed on the sub-screen 31 from being mixed, the projection device 10 is configured to project light in an invisible region. Is preferable.

Further, each projection device 10 projects light having a different wavelength, such as the projection device 10-1 projecting red light, the projection device 10-2 projecting green light, and the projection device 10-3 projecting blue light. It may be configured. Further, the projection devices 10-1 and 2 may be configured to project red light, and the projection devices 10-3 may be configured to project blue light. The plurality of projection devices 10 may be configured to project not only the three primary colors of red, green and blue, but also light such as orange, yellow, yellowish green, purple, pink, brown, dark green and white. , The wavelength of the projected light is not limited. Further, the plurality of projection devices 10 may be configured to project not only the wavelength of light but also light in which parameters such as hue, saturation, and brightness are set.

The projection device 10 has a spatial modulation element including a display surface for displaying a pattern for projecting desired display information on the sub-screen 31. The projection device 10 reflects the light emitted from the light source on the display surface of the space modulation element, and displays desired display information on the sub-screen 31. The detailed configuration of the projection device 10 will be described later.

The control device 20 controls the projection device 10 so that desired display information is displayed at a desired position on any of the subscreens 31 constituting the screen 30. The detailed configuration of the control device 20 will be described later.

The screen 30 is composed of a plurality of subscreens 31-1 to 3. The plurality of subscreens 31 to 1 to 3 are arranged at predetermined intervals in the first direction. 1 and 2 show an example in which a plurality of subscreens 31 to 1 to 3 are arranged at predetermined intervals in a direction perpendicular to the main surface of each subscreen 31. The direction in which the plurality of sub-screens 31 to 1 to 3 are arranged can be set in any direction, not in the direction perpendicular to the main surface of the screen 30. Further, the main surfaces of the plurality of subscreens 31 to 1 to 3 do not have to be parallel to each other. Further, the interval between the plurality of subscreens 31 to 1 to 3 does not have to be a constant distance.

The screen 30 individually displays information about different elevations on any of the plurality of subscreens 31-13. The altitude is the height based on the average sea level, and the height above the average sea level is shown as plus and the height below the average sea level is shown as minus. Further, in FIGS. 1 and 2, each subscreen 31 is shown as if it floats in the air, but each subscreen 31 is actually supported by a support (not shown).

Each sub-screen 31 is a transparent phosphor screen composed of a transparent sheet in which a phosphor is dispersed, and display information under the transparent screen can be seen through each layer. The lowermost sub-screen 31-3 does not have to be transparent if there is no information to be transmitted and shown under the sub-screen 31-3. Further, the sub-screen 31 may be a transparent sheet in which a fluorescent substance is dispersed, coated on a surface such as transparent glass.

The screen 30 of the display device 1 according to the present embodiment is composed of at least two sub-screens 31. The number of sub-screens 31 constituting the screen 30 is not limited to three as shown in FIG. 1, and may be increased or decreased as necessary.

For example, when the display device 1 according to the present embodiment is used to show the submarine's dive status, the plurality of subscreens 31 to 1 to 3 may be arranged so as to correspond to a predetermined depth. Further, when the display device 1 according to the present embodiment is used to indicate the cruising status of the aircraft, the plurality of sub-screens 31 to 1 to 3 may be set so as to correspond to a predetermined altitude.

The intervals between the plurality of subscreens 31 to 1 to 3 may be equal intervals or arbitrary intervals. Further, the intervals between the sub-screens 31 to 1 to 3 may be arranged at a ratio according to the actual size, or may be arranged at a ratio different from the actual size.

The sub-screen 31 is a transparent sheet in which a phosphor that absorbs the irradiated laser light and emits a specific fluorescent color is dispersed. When light of a predetermined wavelength is incident on the sub-screen 31, the sub-screen 31 emits a fluorescent color derived from the phosphor dispersed in each sub-screen 31.

For example, the sub-screen 31 may be realized by a transparent sheet in which a phosphor is dispersed. In particular, the subscreen 31 is preferably a transparent plastic sheet in which a nano-sized phosphor is dispersed. For example, the transparent sheet may be made of a transparent resin containing polyvinyl aceral as a main raw material, such as polyvinyl butyral (PVB). As long as the transparent sheet is not difficult to recognize the fluorescent color emitted by the phosphor excited by light of a specific wavelength, any material such as plastic or glass can be applied, and the material is limited. Do not add.

For example, the rare earth-doped composite oxide may be dispersed as a phosphor on the sub-screen 31. For example, a phosphor obtained by doping a composite oxide such as yttrium aluminum garnet or yttrium vanadate with a rare earth element such as europium, dysprosium, erbium, cerium, or thulium can be used. Further, for example, compound semiconductor nanoparticles utilizing the property of quantum dots that can obtain different fluorescence by controlling the particle size may be dispersed as a phosphor on the subscreen 31. The phosphor used in the subscreen 31 is not limited to the above-mentioned compounds and compositions as long as it is excited by light of a specific wavelength and emits a specific fluorescent color.

It is preferable that the phosphor used for the subscreen 31 is transparent in the visible region and is excited by light having a wavelength outside the visible region to emit fluorescence. With such a configuration, since the phosphor is transparent in the visible region, it is possible to recognize the color of the desired display information projected on the other subscreen 31 through one of the subscreens 31.

(Projection device)
Here, a detailed configuration of the projection device 10 will be described with reference to FIGS. 3 and 4. As shown in FIG. 3, the projection device 10 includes a light source 11, a light source drive unit 12, a spatial modulation element 15, a modulation element control unit 16, and a projection unit 18. Further, as shown in FIG. 4, the projection device 10 includes a collimator 111, a Fourier transform lens 181, an aperture 182, and a projection lens 183.

The light source 11 emits light 140 having a specific wavelength. The light emitted by the light source 11 becomes coherent light 140 by the collimator 111, and irradiates the display surface of the space modulation element 15.

The light source 11 may be configured to emit light 140 in a visible region, or may be configured to emit light 140 in an invisible region such as an ultraviolet region or an infrared region. The light emitted by the light source 11 is selected according to the excitation wavelength of the phosphor in the subscreen 31. For example, when the excitation wavelength of the phosphor in the subscreen 31 is 405 nanometers, the light source 11 corresponding to the subscreen 31 may be selected to emit light having a wavelength in the vicinity of 405 nanometers.

As shown in FIG. 4, in the present embodiment, the incident angle of the light 140 is made non-perpendicular with respect to the display surface of the space modulation element 15. That is, the emission axis of the light 140 emitted from the light source 11 is inclined with respect to the display surface of the space modulation element 15. If the emission axis of the light 140 is set obliquely with respect to the display surface of the space modulation element 15, the efficiency can be improved because the light 140 can be incident on the display surface of the space modulation element 15 without using a beam splitter. ..

The light source driving unit 12 is a power source that drives the light source 11 under the control of the control device 20 and emits light 140 from the light source 11.

The spatial modulation element 15 displays a pattern for generating desired display information displayed on the screen 30 on its own display surface according to the control of the modulation element control unit 16. In the present embodiment, the display information 101 corresponds to the desired display information.

For example, the space modulation element 15 can be realized by a phase modulation type space modulation element that receives the incident of coherent light 140 having the same phase and modulates the phase of the incident light 140 into the modulated light 170. The spatial modulation element 15 emits the modulated light 170 toward the projection unit 18. The spatial modulation element 15 may be an element of a type different from the phase modulation type as long as it can project desired display information on the screen 30.

On the display surface of the phase modulation type spatial modulation element 15, the phase distribution of desired display information projected on the screen 30 is displayed. The modulated light 170 reflected in the display region of the spatial modulation element 15 becomes an image in which a kind of diffraction grating forms an aggregate, and the light diffracted by these diffraction gratings is collected to obtain desired display information. It is formed.

The space modulation element 15 is realized by, for example, a space modulation element using a ferroelectric liquid crystal display, a homogeneous liquid crystal display, a vertically oriented liquid crystal display, or the like. Specifically, the spatial modulation element 15 can be realized by LCOS (Liquid Crystal on Silicon). Further, the spatial modulation element 15 may be realized by, for example, a MEMS (Micro Electro Mechanical System).

The modulation element control unit 16 displays a pattern for projecting desired display information on the screen 30 on the display surface of the spatial modulation element 15 based on the projection conditions set by the control device 20. For example, in the phase modulation type modulation element control unit 16, parameters that determine the difference between the phase of the light 140 irradiated on the display surface of the space modulation element 15 and the phase of the modulation light 170 reflected on the display surface change. The space modulation element 15 is controlled in this way. The details of the projection conditions will be described later.

The parameters that determine the difference between the phase of the light 140 irradiated on the display surface of the phase modulation type spatial modulation element 15 and the phase of the modulated light 170 reflected on the display surface are, for example, optics such as the refractive index and the optical path length. It is a parameter related to the physical characteristics. For example, the modulation element control unit 16 changes the refractive index of the display surface by controlling the voltage applied to the display surface of the space modulation element 15. As a result, the light 140 applied to the display surface is appropriately diffracted based on the refractive index of the display surface. That is, the phase distribution of the light 140 irradiated to the phase modulation type spatial modulation element 15 is modulated according to the optical characteristics of the display surface. The control of the spatial modulation element 15 by the modulation element control unit 16 is not limited to the above.

The projection unit 18 projects the light 140 emitted from the light source 11 onto the screen 30 as a signal light 190. As shown in FIG. 4, the projection unit 18 includes a Fourier transform lens 181, an aperture 182, and a projection lens 183. The modulated light 170 modulated by the spatial modulation element 15 is projected onto the screen 30 as signal light 190 by the projection unit 18. The image formed by the signal light 190 projected on the screen 30 is the display information 101.

The Fourier transform lens 181 is an optical lens for forming an image formed when the modulated light 170 reflected on the display surface of the spatial modulation element 15 is projected to infinity at a focal position near the spatial modulation element 15. Is. The Fourier transform lens 181 may be composed of a single lens or a combination of a plurality of lenses.

The aperture 182 has a function of erasing the higher-order light contained in the light focused by the Fourier transform lens 181 and specifying the image region. The opening portion of the aperture 182 is opened smaller than the image area of the display information at the position of the aperture 182, and is installed so as to block the peripheral area of the display information at the position of the aperture 182. For example, the aperture 182 is open in a rectangular or circular shape. The aperture 182 is preferably installed at the focal position of the Fourier transform lens 181 but may deviate from the focal position as long as it can exert a function of erasing higher-order light.

The projection lens 183 is an optical lens that magnifies and projects the light focused by the Fourier transform lens 181. The projection lens 183 projects the signal light 190 so that the display information 101 corresponding to the phase distribution input to the spatial modulation element 15 is displayed on the screen 30. If the display information 101 can be projected on the screen 30 without the projection lens 183, the projection lens 183 may be omitted.

When the projected light is projected obliquely to the screen 30 as in the present embodiment, the projection lens 183 that projects the projected light by correcting the distortion generated by the positional relationship between the screen 30 and the projection lens 183 is used. It is preferable to apply.

The signal light 190 projected from the projection unit 18 is not uniformly projected on the entire surface of each subscreen 31, but is intensively projected on image portions such as characters, symbols, and frames constituting the display information 101. In this case, since the irradiation amount of the light 140 can be substantially reduced, the overall light output can be suppressed. Therefore, in the present embodiment, it can be composed of a small and low power light source 11 and a low output light source driving unit 12 for driving the light source 11.

(Control device)
Next, the control device 20 according to the present embodiment will be described with reference to FIG. As shown in FIG. 5, the control device 20 according to the present embodiment includes a data receiving unit 21, a projection condition setting unit 22, a display pattern storage unit 23, and a projection condition output unit 24.

The data receiving unit 21 receives information (hereinafter, display target data) regarding an object (hereinafter, display target) to be displayed on the screen 30 from the host system of the display device 1. The host system edits the captured information captured by the movement path of the display target or a radar installed in the vicinity, and transmits the display target data of the display target to the display device 1. The host system may be configured to include the display device 1 itself.

The display target data received by the data receiving unit 21 includes identification information indicating what the display target is, position information of the display target, and the like. In addition, the display target data may include the traveling direction and speed of the display target, the departure point, the relay point, the destination, the route, and other information.

The identification information is information that can identify the display target, such as a name and a call sign. The position information represents the position of the display target in three-dimensional coordinates. The traveling direction and speed of the display target are the traveling direction and speed of the display target during cruising. The route to be displayed is information indicating the time when the display target is displayed on the screen 30 and the position where the display target is cruising after a predetermined time from the current time.

The data receiving unit 21 outputs the received display target data to the projection condition setting unit 22.

The projection condition setting unit 22 acquires display target data from the data receiving unit 21 and sets projection conditions based on the acquired display target data. The projection condition is a condition for displaying desired display information on the screen 30 by the projection device 10.

The projection condition setting unit 22 extracts identification information and position information from the acquired display target data, and sets a condition (hereinafter, hierarchical condition) on which layer of the sub-screen 31 the display target is to be displayed. The hierarchy indicates the cruising altitude if the display target is an airplane, and indicates the dive depth if the display target is a submarine. That is, the hierarchy indicates the altitude at which the display target is located. In addition, the projection condition setting unit 22 sets a condition (hereinafter referred to as a position condition) as to which position on the set subscreen 31 the information regarding the display target is projected. That is, the projection condition setting unit 22 sets the hierarchical condition and the position condition for each display target.

In the display device 1 according to the present embodiment, the number of subscreens 31 is finite. Therefore, the projection condition setting unit 22 may display the display information 101 related to the display target on the sub-screen 31 of the hierarchy in which the display target is set to an altitude close to the altitude during cruising. Further, the position of the display target may be an actual position on the altitude plane on which the display target is located, or may be a predicted position when the display target reaches the altitude of the hierarchy.

Further, the projection condition setting unit 22 acquires a display pattern associated with the identification information included in the input display target data from the display pattern storage unit 23. Further, the projection condition setting unit 22 acquires a display pattern corresponding to each information included in the input display target data from the display pattern storage unit 23.

The projection condition setting unit 22 synthesizes patterns related to the parameters of each information, or sets the patterns of each information to be displayed in different display areas on the display surface of the space modulation element 15. The pattern displayed on the display surface of 15 is set.

The projection condition setting unit 22 transmits the set projection condition to the projection condition output unit 24.

The display pattern storage unit 23 stores a display pattern to be displayed on the display surface of the space modulation element 15 in order for the projection device 10 to display desired display information on the screen 30. When the space modulation element 15 is a phase modulation type element, the display pattern is a phase distribution associated with desired display information. For example, the display pattern storage unit 23 may acquire and store the display pattern created by the host system in advance.

For example, the display pattern storage unit 23 may store predetermined symbols and figures associated with the identification information of the display target. Further, for example, the display pattern storage unit 23 may store display patterns related to parameters of each information that can be included in the display target data. Since the number of information displayed on the screen 30 is usually limited, the number of display patterns stored in the display pattern storage unit 23 is finite.

The projection condition output unit 24 transmits the projection conditions set by the projection condition setting unit 22 to the projection device 10.

As described above, in the display device according to the present embodiment, various information regarding the display target is displayed three-dimensionally. Therefore, according to the display device according to the present embodiment, the space level is divided into a plurality of layers and displayed, and the positional relationship between the display objects in each layer and the positional relationship between the display objects between the layers are intuitively displayed. It can be displayed so that it can be easily recognized. Further, since the display device according to the present embodiment can grasp the situation of the display target from anywhere 360 degrees, it is suitable for information sharing by a large number of people.

(Second Embodiment)
Next, the display device 2 according to the second embodiment of the present invention will be described with reference to the drawings.

FIG. 6 is a conceptual diagram of the display device 2 according to the present embodiment. FIG. 6 shows a side view. The display device 2 according to the first embodiment is different from the display system 1 according to the first embodiment in that it has a variable support 42 capable of changing the height of the subscreen 31 and the spacing between the seats.

The variable support 42 is a support that grips each subscreen 31 and makes it possible to arbitrarily change the height of the subscreens 31 and the spacing between the seats. The variable support 42 is controlled by the control device 20-2 and expands and contracts in the first direction. Although FIG. 6 shows an example in which the variable support 42 is composed of a single support, it may be composed of a plurality of supports.

The variable support 42 has at least one telescopic mechanism incorporating an electric device such as a motor (not shown). The variable support 42 changes the height of the sub-screen 31 by driving the electric device under the control of the control device 20-2.

Further, when the height of one sub-screen 31 (first sheet) is changed, the height of the other sub-screen 31 (second sheet) that does not need to be changed does not change in the variable support 42. Each movable device is operated in conjunction with each other. That is, the variable support 42 can operate so as not to change the height of the second sheet by changing the distance between the first sheet and the second sheet when changing the height of only the first sheet. ..

For example, in FIG. 6, when changing the height of the sub-screen 31-2, if the distance between the sub-screen 31-1 and the sub-screen 31-2 is not changed, the height of the sub-screen 31-2 is changed. The height of the sub-screen 31-1 also changes. In such a case, the variable support 42 may operate so as to lower the height of the sub-screen 31-1 by the amount of increasing the height of the sub-screen 31-2.

FIG. 7 is a block diagram showing the configuration of the control device 20-2 according to the present embodiment. The control device 20-2 according to the present embodiment has a configuration in which the height setting unit 221 and the variable support control unit 222 are added to the control device 20 of the first embodiment. The functions of the control device 20-2 other than the height setting unit 221 and the variable support control unit 222 are the same as those of the control device 20, and thus the description thereof will be omitted.

The height setting unit 221 acquires the position information of the display target from the data receiving unit 21, and changes the height of any of the subscreens 31 based on the height information included in the position information. The height setting unit 221 sets the height of the sub-screen 31 so as to correspond to the height at which the display target is located. When the actual height at which the display target is located is within a predetermined range, the height setting unit 221 can set the height of the sub-screen 31 for displaying the display information 101 of the display target to a predetermined set value. good. When the height of the display target included in the position information deviates from the height of the current sub screen 31, the height setting unit 221 sets the height of the sub screen 31 on which the display information 101 of the display target is displayed. It may be changed based on the position information.

When changing the height of the sub-screen 31, the height setting unit 221 outputs the newly set height of the sub-screen 31 to the variable support control unit 222. The height setting unit 221 may output information about the sub-screen 31 whose height has been changed to the projection condition setting unit 22.

The variable support control unit 222 controls the height of the variable support 42 based on the setting of the height setting unit 221. For example, when the variable support 42 is driven by a motor, the variable support control unit 222 drives a motor for changing the height of the sub screen 31 and controls the height of the sub screen 31.

As described above, in the display device according to the present embodiment, the height of the screen corresponding to each layer can be arbitrarily changed. Therefore, according to the present embodiment, it is possible to present three-dimensional information more intuitively and easily by changing the setting value of the height of the screen according to the change in the height of the display target.

(Modification example)
FIG. 8 is a display device 2-1 of a modified example of the display device 2 according to the second embodiment. FIG. 8 shows a side view.

In the display device 2-1 of this modification, each projection device 10 is attached to each sub-screen 31 by a variable support 43 (43-1 to 3) whose height can be changed relative to each sub-screen 31. It is fixed. The height of the variable support 43 is set by the height setting unit 221 of the control device 20, and is controlled by the variable support control unit 222.

According to this modification, the height of the projection device with respect to the sheet can be increased so that it can be easily recognized for a detailed depiction that tends to be difficult to recognize when projected onto the peripheral edge of the sheet. Further, according to this modification, the variable support is controlled when the seat spacing is narrowed, and the height of the projection device with respect to the seat is lowered to prevent the projection device from colliding with the upper seat. Can be.

(Third Embodiment)
Next, the display device 3 according to the third embodiment of the present invention will be described with reference to the drawings.

9 and 10 are conceptual diagrams of the display device 3 according to the present embodiment. The display device 3 according to the present embodiment is different from the display device 1 according to the first embodiment in that the three-dimensional display unit 50 is provided below the screen 30.

9 and 10 show a display device for displaying the submarine's dive state as an example of the display device 3 according to the present embodiment. FIG. 9 shows a perspective view, and FIG. 10 shows a side view. The display device 3 according to the present embodiment can also be applied to an air traffic control system or the like.

9 and 10 show a three-dimensional positional relationship between submarines by a plurality of layers associated with a specific depth. For example, the sea level information is displayed on the uppermost sub-screen 31-1, and the deeper the depth information is displayed toward the lower sub-screen 31. At the bottom, a device (three-dimensional display unit 50) capable of mechanically changing the surface shape is arranged to show the topography of the seabed. In addition, in FIG. 9 and FIG. 10, display information 101-1 to 3 indicate the position of the submarine to be displayed.

The three-dimensional display unit 50 changes its surface shape according to the control of the control device 20-3. The stereoscopic display unit 50 is realized by, for example, the technique disclosed in Non-Patent Document 1.
(Non-Patent Document 1) D. Leethinger and H. Ishii, "Relief: A Scalable Activated Shipplay", [online], MIT Media Lab, [Search June 19, 2015], Internet <URL: http: // tmg-trackr. media. mit. edu / publicmedia / Papers / 432-Relief% 20A% 20Scalable% 20Actured / Public / PDF
FIG. 11 is a conceptual diagram of the three-dimensional display unit 50 according to the present embodiment. Although FIG. 11 shows the three-dimensional display unit 50 as a circular table, the three-dimensional display unit 50 may be an arbitrary table on which the main surface thereof can be placed in the first direction.

The upper part of FIG. 11 shows a state in which a plurality of pins 51 are arranged on the main surface of the circular table so that their ends face in the first direction. The upper part of FIG. 11 is the initial state of the stereoscopic display unit 50. The middle part of FIG. 11 illustrates how the ends of the plurality of pins 51 project from the first surface of the circular table to an arbitrary height. The lower part of FIG. 11 illustrates a state in which the upper part of the plurality of pins 11 is covered by the telescopic cover 52 in the state of the middle part of FIG. If the cover 52 is unnecessary, the cover 52 may be omitted.

The plurality of pins 51 arranged on the three-dimensional display unit 50 are arranged so that one end thereof protrudes from the first surface of the circular table. Each of the plurality of pins 51 is controlled to enter and exit individually according to the control of the control device 20-3. For example, the plurality of pins 51 may be configured to operate individually by a movable mechanism inside the stereoscopic display unit 50. When the elastic cover 52 covers the upper part of the plurality of pins 51, the cover 52 is installed so as to be deformed as the plurality of pins 51 protrude.

FIG. 12 is a conceptual diagram showing an example of the movable mechanism 510 mounted on the three-dimensional display unit 50. The left side of FIG. 12 shows a state in which the pin 51 does not protrude. The right side of FIG. 12 shows a state in which the pin 51 is projected. In the example of FIG. 12, the pin 51 is installed in a hole made in the base of the stereoscopic display unit 50. A movable mechanism 510 is installed below the pin 51.

The movable mechanism 510 is composed of an expansion / contraction unit 511 and a drive unit 512. For example, the drive unit 512 can be a mechanism that expands and contracts the expansion and contraction unit 511 by an electric mechanism such as a motor. Further, for example, the drive unit 512 may be a mechanism for expanding / contracting the expansion / contraction unit 511 by changing the air pressure inside the expansion / contraction unit 511. When the drive unit 512 receives the control signal from the control device 20-3, the drive unit 512 expands and contracts the expansion / contraction unit 511 in response to the control signal, and the pin 51 is projected or retracted. The amount of protrusion of the pin 51 may be set by the current value of the control signal or the like.

For example, it is preferable to embed a material having a restoring force such as a spring inside the telescopic portion 511. If a spring is embedded inside the telescopic portion 511, the state of the pin 51 and the movable mechanism 510 returns to the initial state (left side in FIG. 12) due to the restoring force of the spring when the drive unit 512 is stopped.

The movable mechanism 510 in FIG. 12 is an example of a mechanism for moving the pin 51. The mechanism for moving the pin 51 is not limited to the mechanism shown in FIG. 12 as long as the amount of protrusion of the plurality of pins 51 can be individually controlled.

FIG. 13 is a block diagram showing a configuration of the control device 20-3 according to the present embodiment. The control device 20-3 according to the present embodiment has a configuration in which the stereoscopic display setting unit 231 and the stereoscopic display control unit 232 are added to the control device 20 of the first embodiment. The functions of the control device 20-3 other than the stereoscopic display setting unit 231 and the stereoscopic display control unit 232 are the same as those of the control device 20, and thus the description thereof will be omitted.

The stereoscopic display setting unit 231 acquires information regarding the state of the lowest layer in the three-dimensional space in which the display target is located from the data receiving unit 21. The state of the lowest layer means, for example, the state of unevenness on the seabed when submarine is submerged, and the state of unevenness on the ground surface when cruising an aircraft. Further, the data receiving unit 21 may be configured to receive information on the state of the lowest layer from a higher-level system or the like.

When the stereoscopic display setting unit 231 acquires the information regarding the state of the lowest layer, the stereoscopic display setting unit 231 individually sets the heights of the plurality of pins 51 arranged in the stereoscopic display unit 50 based on the information.

The stereoscopic display control unit 232 individually controls the heights of the plurality of pins 51 constituting the stereoscopic display unit 50 based on the settings of the stereoscopic display setting unit 231.

As described above, in the display device according to the present embodiment, a three-dimensional display unit that not only three-dimensionally displays various information regarding the display target but also mechanically changes the display state is configured. According to this embodiment, since the information on the seabed and the ground surface can be displayed three-dimensionally, it becomes easier to grasp the three-dimensional information more intuitively than the above-described embodiment.

(Modification example)
FIG. 14 is a display device 3-1 of a modified example of the display device 3 according to the third embodiment. FIG. 14 shows a side view.

In the display device 3-1 of this modification, a projection device 10-4 that projects display information is installed on the cover 52 of the three-dimensional display unit 50 that mechanically changes its shape. The projection device 10-4 has the same configuration as the projection devices 10-1 to 1-3.

In this modification, since there may be a portion where it is difficult to project the display information due to the unevenness of the cover 52, a plurality of projection devices 10-4 may be configured. Further, in this modification, since the cover 52 does not have to be formed by the transparent sheet in which the phosphor is dispersed, the color of the light projected by the projection device 10-4 is arbitrarily set regardless of the properties of the cover 52. can. The cover 52 may be configured by a transparent sheet in which a phosphor is dispersed.

(Fourth Embodiment)
Next, the display device 4 according to the fourth embodiment of the present invention will be described with reference to the drawings.

15 and 16 are conceptual diagrams of the display device 4 according to the present embodiment. The display device 4 according to the first embodiment is different from the display device 1 according to the first embodiment in that the display device 4 according to the first embodiment has an opening 32 in a part of the sub-screen 31 and has a stage 60 for moving the opening 32 up and down. different. In the examples of FIGS. 15 and 16, the object 61, which is an image of a submarine, is arranged on the stage 60.

The stage 60 moves up and down the opening 32 of the subscreen 31 under the control of the control device 20-4. The stage 60 is vertically movablely supported by the variable support 62. The height of the stage 60 is controlled, for example, by changing the height of the variable support 62 so that it is located at a height corresponding to the depth of the submarine on which the user is boarding.

An object 61, which is an image of an aircraft such as a submarine on which the user is on board, may be placed on the upper surface of the stage 60. The display target existing around the display target corresponding to the object 61 is displayed as display information 101 on each sub-screen 31. FIG. 15 numerically shows how far each display target is from the axis along the first direction centered on the object 61. In FIG. 15, the larger the numerical value displayed on the sub screen 31, the farther away from the object 61.

The stage 60 may be rotated so as to change the direction of the nose of the object 61 not only in the vertical direction but also in an arbitrary direction. Further, the stage 60 may be changed so that the direction of the nose of the object 61 is tilted upward or downward by tilting its main surface at an arbitrary angle.

FIG. 17 is a block diagram showing the configuration of the control device 20-4 according to the present embodiment. The control device 20-4 according to the present embodiment has a configuration in which the stage state setting unit 241 and the stage state control unit 242 are added to the control device 20 of the first embodiment. The functions of the control device 20-4 other than the stage state setting unit 241 and the stage state control unit 242 are the same as those of the control device 20, and thus the description thereof will be omitted.

The stage state setting unit 241 acquires the position information of the display target corresponding to the object 61 from the data receiving unit 21, and the variable support 62 is based on the height of the display target corresponding to the object 61 included in the position information. Set the height of. The stage state setting unit 241 may be set so that the nose of the object 61 is directed in an arbitrary direction by rotating or tilting the stage 60.

The stage state control unit 242 controls the height of the variable support 62 based on the setting of the stage state setting unit 241 and changes the height of the stage 60. Further, the stage state control unit 242 may control the rotation and tilt of the stage 60 based on the setting of the stage state setting unit 241 to change the nose of the object 61.

As described above, in the present embodiment, an object imagining a submarine on which the user is boarding is arranged on a movable stage, and the stage is moved up and down according to the depth at which the submarine is submerged. According to the present embodiment, it is possible to more intuitively grasp the positional relationship between the aircraft on which the user is boarding and the display target around the aircraft.

(Modification example)
FIG. 18 is a display device 4-1 of a modified example of the display device 4 according to the fourth embodiment. FIG. 18 shows a perspective view. The display device 4-1 of this modification is an example in which the display device 3 according to the third embodiment and the display device 4 according to the present embodiment are combined.

According to this modification, it is possible to more intuitively grasp the positional relationship between the aircraft on which the user is boarding and the display target in the vicinity thereof, including the state of the lowest layer such as the seabed.

(Fifth Embodiment)
Next, the display device 5 according to the fifth embodiment of the present invention will be described with reference to the drawings.

FIG. 19 is a conceptual diagram of the display device 5 according to the present embodiment. The display device 5 according to the first embodiment has an opening 32 formed in a part of the sub-screen 31 and has a stage 60 for moving the opening 32 up and down, which is the same as the display device 1 according to the first embodiment. Is different. Further, the display device 5 according to the present embodiment is different from the display device 4 according to the fourth embodiment in that it has a projection device 10-5 that projects display information on the upper surface of the stage 60.

The stage 60 according to the present embodiment has the same configuration as that of the fourth embodiment. However, in order to display the display information projected by the projection device 10-5, the stage 60 of the present embodiment is preferably configured to include the same sheet as the subscreens 31-1 to 3. If the stage 60 does not need to be transparent, the material of the stage 60 is not limited.

FIG. 20 is an example showing a usage scene of the display device 5 according to the present embodiment. For example, as shown in FIG. 20, the object 61 is arranged on the stage 60. Then, the projection device 10-5 projects information about the object on the stage 60 beside the object 61. For example, various information such as the depth and angle of the aircraft corresponding to the object 61, the state of equipment, and the like may be displayed beside the object 61.

According to the present embodiment, the user can more intuitively grasp the aircraft including the information about the aircraft such as the submarine on which the user is boarding.

(Sixth Embodiment)
Next, the display device 6 according to the sixth embodiment of the present invention will be described with reference to the drawings. FIG. 21 is a conceptual diagram of the display device 6 according to the present embodiment. The display device 6 according to the present embodiment is different from the display devices 1 to 5 according to the first to fifth embodiments in that it has an interface device 100 including an image pickup device that images each screen 30 and the stereoscopic display unit 50. .. Note that FIG. 21 shows an example in which the interface device 100 projects the user interface 102 onto the subscreen 31 and the stereoscopic display unit 50.

FIG. 22 is a conceptual diagram showing a functional configuration of the display device 6 according to the present embodiment. In the display device 6, the control device 20-6 controls the projection device 10 and the image pickup device 70.

The image pickup apparatus 70 images the screen 30 displaying the user interface 102 and the stereoscopic display unit 50. The image pickup apparatus 70 can be realized by, for example, a function of a general camera. The image pickup apparatus 70 may have a function of capturing light having a wavelength other than visible light, such as infrared light and ultraviolet light.

FIG. 23 is a block diagram showing the configuration of the image pickup apparatus 70. As shown in FIG. 23, the image pickup device 70 includes an image pickup element 71, an image processing processor 73, an internal memory 75, and a data output unit 77.

The image sensor 71 is an element for capturing an image of the screen 30 or the stereoscopic display unit 50 and acquiring image data. The image sensor 71 is a photoelectric conversion element in which semiconductor components are integrated into an integrated circuit. The image pickup device 71 can be realized by, for example, a solid-state image pickup device such as a CCD (Charge-Coupled Device) or a CMOS (Complementary Metal-Oxide-Semiconductor). Normally, the image pickup element 71 is composed of an element that captures light in the visible region, but may be composed of an element that can capture and detect electromagnetic waves such as infrared rays, ultraviolet rays, X-rays, gamma rays, radio waves, and microwaves.

The image processing processor 73 performs integrated image processing such as dark current correction, interpolation calculation, color space conversion, gamma correction, aberration correction, noise reduction, and image compression on the image data captured by the image pickup element 71. It is a circuit. When the image data is output without being processed, the image processing processor 73 may be omitted.

The internal memory 75 is a storage element that temporarily stores image data that cannot be processed by the image processing processor 73 and image data that has been processed. The image data captured by the image sensor 71 may be temporarily stored in the internal memory 75. The internal memory 75 may be configured by a general memory.

The data output unit 77 outputs the image data processed by the image processing processor 73 to the control device 20-6.

FIG. 24 is a block diagram showing the configuration of the control device 20-6 according to the present embodiment. The control device 20-6 according to the present embodiment has a configuration in which the image pickup control unit 261 and the operation recognition unit 262 are added to the control device 20 of the first embodiment. The functions of the control device 20-6 other than the image pickup control unit 261 and the operation recognition unit 262 are the same as those of the control device 20, and thus the description thereof will be omitted.

The image pickup control unit 261 controls the image pickup device 70 to image a desired subscreen 31 and the stereoscopic display unit 50, and acquires the image data captured by the image pickup device 70. The image pickup control unit 261 outputs the acquired image data to the operation recognition unit 262.

The operation recognition unit 262 acquires image data from the image pickup control unit 261 and analyzes the image data to recognize the operation content of the user.

For example, the projection condition setting unit 22 sets an operation key for inputting an operation related to the display information on the screen 30 or the stereoscopic display unit 50. The operation recognition unit 262 determines the operation position of the user on the screen 30 or the stereoscopic display unit 50. The operation recognition unit 262 can recognize the operation content of the user by associating the operation position of the user with the operation keys set on the screen 30 and the stereoscopic display unit 50.

Here, the display device 6 according to the present embodiment will be specifically described with reference to the example of FIG.

In the example of FIG. 21, the display device 6 causes the sub-screens 31 to 1 to display the display information (user interface 102 to 1 to 3) of "UP" and "DOWN". In the user interface 102-1 to 3, the sub screens 31 to 1 to 3 are independently raised by operating "UP", and the sub screens 31 to 1 to 3 are independently lowered by operating "DOWN". It shall be.

Further, the display device 6 causes the stereoscopic display unit 50 to display display information (user interface 102-4) indicating the “left-pointing arrow” and the “right-pointing arrow”. In the user interface 102-4, the display information of the entire screen 30 and the stereoscopic display unit 50 is rotated to the left by operating the "left-pointing arrow", and is rotated to the right by operating the "right-pointing arrow". ..

For example, in FIG. 21, if the "UP" of the user interface 102-2 displayed on the sub screen 31-2 is operated, the sub screen 31-2 is raised by a predetermined height. Further, for example, in FIG. 21, if the "right-pointing arrow" of the stereoscopic display unit 50 is operated, the display information of the screen 30 and the entire stereoscopic display unit 50 is rotated to the right.

As described above, in the display device according to the present embodiment, the display information of the display device can be changed to a desired state by the operation of the user. Therefore, according to the display device according to the present embodiment, it is possible to display the display information that the user wants to know in a more intuitive and easy-to-understand manner. Further, according to the present embodiment, since it can be configured to input the user's operation, the function of the input device can be added to the display device.

(7th Embodiment)
Next, FIGS. 26 and 27, which will explain the display device 7 according to the seventh embodiment of the present invention with reference to the drawings, are conceptual diagrams of the display device 7 according to the present embodiment. FIG. 26 shows a perspective view, and FIG. 27 shows a side view. The present embodiment will be described with reference to an example in which the display device 3 according to the third embodiment is modified.

The display device 7 according to the present embodiment is a display device in which the 0th-order light 191 is passed from one surface side of the sub screen 31 to the other surface side through an opening 32 formed in a part of the sub screen 31. Different from 3. Further, the display device 7 according to the present embodiment has a light absorber 45 that absorbs the 0th-order light 191 that has passed through the opening 32 of the subscreen 31. When displaying the display information on the stereoscopic display unit 50, the light absorber 46 is arranged on the surface or inside of the stereoscopic display unit 50.

In a general phase modulation type projector, 0th order light is basically generated. It is preferable to eliminate the 0th-order light because it becomes a bright spot. One option is to remove the 0th-order light on the projector side and not project the 0th-order light on the screen, but that method reduces the area for displaying display information, which is disadvantageous in terms of resolution.

In the present embodiment, the 0th-order light is removed by the following two methods. The first method is to make a hole in the sub-screen 31 for passing the 0th-order light 191. The second method is to install a mirror that reflects the 0th-order light 191 on the sub-screen 31. In either method, the 0th-order light 191 is prevented from being displayed on the screen 30 by installing the light absorber 45 that absorbs the removed 0th-order light 191. Hereinafter, the first method will be mainly described. The second method will be described as a modified example of the present embodiment.

As shown in FIG. 26, in the present embodiment, an opening 32 is opened in the central portion of the sub screen 31. The control device 20-7 controls the projection device 10 so that the 0th-order light 191 is projected at the position of the opening 32 formed in the central portion of the subscreen 31. In the figures after FIG. 26, the optical path of the 0th-order light 191 is shown by a dashed-dotted line.

The light absorber 45 is installed on the optical path of the 0th-order light 191 that has passed through the central portion of the subscreen 31. The light absorber 45 may be made of a material that easily absorbs light, such as a black body. For the blackbody, a material having a high light absorption rate such as carbon may be selected, and the material is not limited. The light absorber 45 is preferably made as thin as possible so as not to interfere with visibility. For example, the light absorber 45 may be attached to the outside of a support (not shown) that supports the subscreen 31. It is preferable to set the interval between the sub-screens 31 so that the 0th-order light 191 does not hit the adjacent sub-screens 31. The light absorber 46 may be arranged inside or on the surface of the lowermost three-dimensional display unit 50.

When set as shown in FIG. 26, it is desirable to improve the projection optical system based on the position of the opening 32 for removing the 0th order light 191. This is because the position of the 0th-order light 191 deviates from the center of the sub-screen 31 when a general projection optical system that uniformly projects the projected light over the entire sub-screen 31 is used.

FIG. 28 shows an example in which the projected light is uniformly projected over the entire subscreen 31 by using a general projection optical system. In this case, the position of the 0th-order light 191 deviates from the center of the sub-screen 31 and comes closer to the projection device 10. In the example of FIG. 28, if the 0th-order light 191 is projected onto the center of the screen 31, the projected light cannot be projected onto the entire sub-screen 31. Further, even if the same display information is projected, the portion far from the projection device 10 (region A) is displayed large, and the portion close to the projection device 10 (region B) is displayed small.

Therefore, in the present embodiment, it is preferable to configure the projection device 10 with an optical system capable of projecting display information at a magnification that takes distortion into consideration. For example, the projection lens 183 shown in FIG. 4 may be an asymmetric lens.

FIG. 29 shows an example in which the projected light is uniformly projected over the entire subscreen 31 by using an optical system capable of projecting display information at an enlargement ratio considering distortion. That is, the projection device 10 includes a projection lens 183 that projects projected light at a magnification corrected for distortion at each projection position on the subscreen 31. In the example of FIG. 29, an optical system is used in which the projection light is projected onto the projection device 10 at a magnification factor considering distortion at a distant portion (region A) and a near portion (region B). As a result, even if the 0th-order light 191 is positioned at the center of the sub-screen 31, the projected light can be uniformly projected over the entire sub-screen 31. The projection lens 183 that projects the projected light at a magnification corrected for distortion may be applied to the first to sixth embodiments.

As described above, according to the present embodiment, even a projection device using a phase modulation type spatial modulation element can accurately remove the 0th-order light. Therefore, according to the present embodiment, it is possible to solve the problem that the visibility is deteriorated due to the unnecessary 0th-order light being displayed on the screen or the 0th-order light being scattered around the display device.

(Modification example)
Here, a modified example of the display device 7 according to the present embodiment will be described.

FIG. 30 is a conceptual diagram of the display device 7-1 of the first modification. The display device 7-1 has a configuration in which a light absorber 45 is added to the display device 4 according to the fourth embodiment. In the first modification, the surface of the stage 60, the object 61, and the variable support 62 is coated with a light absorber.

As shown in FIG. 30, in an example in which the stage 60 on which the object 61 is arranged is moved up and down, the 0th-order light 191 may hit the moved portion, and therefore the surfaces of the object 61 and the variable support 62. Is also preferably coated with a light absorber. It is also possible to shift the variable support 62 from the optical path of the 0th-order light 191 so that it does not hit the variable support 62. In that case, the surface of the variable support 62 does not have to be covered with the light absorber.

FIG. 31 is a conceptual diagram of the display device 7-2 of the modified example 2. In the second modification, a mirror 47 that reflects the 0th-order light 191 is arranged at the projection position of the 0th-order light 191 on the sub-screen 31 instead of making a hole for passing the 0th-order light 191. In the second modification, the light absorber 45 is installed on the optical path of the 0th-order light 191 reflected by the mirror 47. In the method of the second modification, when the 0th-order light 191 is completely reflected by the mirror 47, the mirror 47 does not appear to be shining. Therefore, the configuration shown in FIG. 31 is established.

In the configuration of the second modification, the method of moving the stage 60 up and down at the center of the substage 31 cannot be applied. However, if the position where the mirror 47 is arranged and the position of the hole for moving the stage 60 up and down are shifted, the method of moving the stage 60 up and down can be applied even in the configuration of the second modification.

FIG. 32 is a conceptual diagram of the display device 7-3 of the modified example 3. The display device 7-3 displays different colors on the screen 30 depending on the light source that emits light having a single wavelength. It should be noted that the method of this modification can be applied even when compounding is not performed.

In the third modification, projected light having a single wavelength is projected onto each subscreen 31 from two different directions. In the display device 7-3 of the modification 3, the two sheets are overlapped to form each sub-screen 31. The configuration of the modified example 3 is not limited to the seventh embodiment, and can be applied to the first to sixth embodiments.

Further, in the third modification, the projection direction of the projection device 10 is set so that the optical path of the 0th-order light 191 deviates from the sub-screen 31. The projection device 10 is arranged so that the 0th-order light 191 is directly absorbed by the light absorber 45.

The uppermost subscreen 31-1 is composed of sheets 310-a and 310-b. The central layer subscreen 31-2 is composed of sheets 310-c and 310-d. The bottom layer subscreen 31-3 is composed of sheets 310-e and 310-f.

When projected light is projected from each projection device 10 onto each sub-screen 31, each sheet 310 constituting each sub-screen 31 develops a color corresponding to the wavelength of the projected light.

The projection device 10-1 projects the projected light of the first wavelength onto the sheet 310-a. Here, it is assumed that when light of the first wavelength is projected onto the sheet 310-a, red color is developed.

The projection device 10-2 projects the projected light of the second wavelength onto the sheets 310-b and 310-c. Here, it is assumed that green is developed when light of a second wavelength is projected onto the sheets 310-b and 310-c.

The projection device 10-3 projects the projected light of the third wavelength onto the sheets 310-d and 310-e. Here, it is assumed that blue is developed when light of a third wavelength is projected onto the sheets 310-d and 310-e.

The projection device 10-4 projects the projected light of the fourth wavelength onto the surfaces of the sheet 310-f and the stereoscopic display unit 50. Here, it is assumed that purple is developed when light of a fourth wavelength is projected onto the surfaces of the sheet 310-f and the stereoscopic display unit 50.

With the above configuration, for example, in the sub-screen 31-1 in which the sheets 310-a and the sheets 310-b are overlapped, red and green can be developed at the same time. Similarly, on the screen 31-2, green and blue can be developed at the same time, and on the screen 31-3, blue and purple can be developed at the same time.

In a general phase modulation type projection device, when projecting light of a plurality of colors, it is necessary to project light having a different wavelength for each color. In this case, it is necessary to install a plurality of light sources on a single screen, or to change the wavelength of the light emitted by the single light source in a time-division manner.

On the other hand, in the third modification, sheets having different colors are laminated to form a sub-screen, and projected light having different wavelengths is projected from both sides of the sub-screen. That is, in the third modification, the projected light is projected from a single projection device onto a plurality of sub-screens. Therefore, according to the third modification, it is not necessary to install a plurality of light sources on a single screen or change the wavelength of the light emitted by the single light source in a time division manner. The structure can be simplified. Further, according to this modification, the 0th-order light can be directly absorbed by the absorber and removed without providing a hole or a mirror in the sub-screen.

If it is a general projection device, the efficiency is deteriorated because the central portion of the projected light is removed. However, in the case of the phase modulation type projection device as in the present embodiment, since the light is concentrated and projected only on the portion where the display information is displayed, the efficiency does not decrease. Regarding the uppermost sub-screen, the method of the modified example 3 may be used, or the method of the modified examples 1 and 2 may be used.

(8th Embodiment)
Next, the display system 8 according to the eighth embodiment of the present invention will be described with reference to the drawings.

FIG. 33 is a conceptual diagram of the display system 8 according to the present embodiment. The display system 8 according to the present embodiment has a configuration in which the display device 1 and the management device 80 according to the first embodiment are combined. The display system 8 may have a configuration in which any of the display devices 1 to 7 according to the first to seventh embodiments is combined with the management device 80, but in the following description, the display device 1 will be used as a representative. take up. Further, since the display devices 1 to 7 constituting the display system 8 have the same configurations as those described above, the description thereof will be omitted.

The management device 80 acquires observation data within a specific range in the three-dimensional space in which the display target is located, extracts information about the display target (hereinafter, display target data) from the acquired observation data, and extracts the display target. A device that transmits data to a display device.

FIG. 34 is a block diagram showing the configuration of the management device 80 according to the present embodiment. The management device 80 includes an observation data receiving unit 81, a target determination unit 82, a target state extraction unit 83, a display target data generation unit 84, and a display target data transmission unit 85.

The observation data receiving unit 81 receives observation data transmitted by a monitoring system (not shown) such as a radar that observes a specific range in the three-dimensional space where the display target is located. For example, the observation data receiving unit 81 includes an antenna (not shown) and receives the observation data by wireless communication via the antenna. The observation data receiving unit 81 may receive the observation data by wire communication via a cable or the like.

For example, a monitoring system emits radio waves of a specific wavelength into a three-dimensional space containing an object such as a display object, and measures the reflected wave of the radio wave to obtain information on the distance and direction to the object. Acquire as observation data. Further, for example, the monitoring system may image a specific range with a camera and acquire information on the size, shape, color, etc. of the object as observation data based on the captured image data or moving image data. The method by which the monitoring system acquires the observation data is not particularly limited. The monitoring system transmits the acquired observation data to the management device 80.

The observation data receiving unit 81 outputs the observation data acquired from the monitoring system to the target determination unit 82.

The target determination unit 82 receives the observation data from the observation data reception unit 81, and verifies whether or not the observation data includes information regarding the display target. For example, the object determination unit 82 verifies the presence or absence of a display object based on information such as the shape, size, position, speed, and color of the object included in the observation data. When the observation data includes the identification information of the observation target, the target determination unit 82 may verify the presence or absence of the display target by using the identification information.

When it is determined that the observation data includes information about the display target, the target determination unit 82 outputs the observation data to the target state extraction unit 83.

The target state extraction unit 83 receives observation data including information on the display target from the target determination unit 82, and extracts information on the display target from the received observation data. For example, the target state extraction unit 83 extracts the position information, the traveling direction, and the speed of the display target. Further, the target state extraction unit 83 extracts information such as identification information of the display target, a departure place, a relay point, a destination, and a route, if possible.

The target state extraction unit 83 outputs information about the extracted display target to the display target data generation unit 84.

The display target data generation unit 84 acquires information on the display target extracted by the target state extraction unit 83, and creates display target data summarizing the acquired information. The display target data generation unit 84 generates display target data including identification information and position information (elevation, longitude, and latitude) of the display target. In addition, the display target data generation unit 84 may include information such as the traveling direction and speed of the display target, the departure point, the relay point, the destination, and the route in the display target data. For example, the display target data generation unit 84 may generate a collection of display target data related to at least one display target in a record format. The display target data generation unit 84 may generate a collection of a plurality of display target data in a table format.

The display target data generation unit 84 outputs the generated display target data to the display target data transmission unit 85.

The display target data transmission unit 85 acquires the display target data generated by the display target data generation unit 84, and transmits the acquired display target data to the display device 1.

When the display device 1 receives the display target data from the management device 80, the display device 1 causes the screen 30 to display the display information 101 based on the display target data. The configuration and operation of the display device 1 are as described in the first to sixth embodiments.

As described above, in the display system according to the present embodiment, the position information of the display target moving in the three-dimensional space is acquired in real time, and the display target data of the display target is generated using the acquired position information. do. Then, in the display system according to the present embodiment, the display information of the display target can be displayed in real time by using the generated display target data. Therefore, according to the display system according to the present embodiment, it is possible to intuitively display the position of the display target in real time.

(Hardware configuration)
Next, the hardware configuration constituting the irradiation system according to each embodiment will be described by taking the computer 90 of FIG. 35 as an example. The computer 90 of FIG. 35 is a configuration example for enabling the control device of the display device according to each embodiment, and does not limit the scope of the present invention. Further, when constructing a small projection device 10, it is preferable to use a microcomputer having the function of the computer 90 of FIG. 35.

As shown in FIG. 35, the computer 90 includes a processor 91, a main storage device 92, an auxiliary storage device 93, an input / output interface 95, and a communication interface 96. The processor 91, the main storage device 92, the auxiliary storage device 93, the input / output interface 95, and the communication interface 96 are connected to each other via the bus 99 so that data can be exchanged. Further, the processor 91, the main storage device 92, the auxiliary storage device 93, and the input / output interface 95 are connected to a network such as the Internet or an intranet via the communication interface 96. The computer 90 is connected to the server or computer of the host system via the network, and can acquire the phase distribution of the displayed display information to be projected from the host system.

The processor 91 expands the program stored in the auxiliary storage device 93 or the like into the main storage device 92, and executes the expanded program. In each embodiment, the software program installed in the computer 90 may be used. The processor 91 executes arithmetic processing and control processing of the control device according to each embodiment.

The main storage device 92 has an area in which the program is developed. The main storage device 92 may be, for example, a volatile memory such as a DRAM (Dynamic Random Access Memory). Further, a non-volatile memory such as an MRAM (Magnetoresistive Random Access Memory) may be configured and added as the main storage device 92.

The auxiliary storage device 93 is a means for storing data such as a phase distribution of display information. The auxiliary storage device 93 is composed of a local disk such as a hard disk or a flash memory. The phase distribution of the display information may be stored in the main storage device 92, and the auxiliary storage device 93 may be omitted.

The input / output interface 95 is a device that connects the computer 90 and the peripheral device based on the connection standard between the computer 90 and the peripheral device. The communication interface 96 is an interface for connecting to a network such as the Internet or an intranet based on a standard or a specification. In FIG. 35, the interface is abbreviated as I / F (Interface). The input / output interface 95 and the communication interface 96 may be shared as an interface for connecting to an external device.

The computer 90 may be configured so that an input device such as a keyboard, a mouse, or a touch panel can be connected to the computer 90, if necessary. These input devices are used to input information and settings. When the touch panel is used as an input device, the display screen of the display device may also serve as the interface of the input device. Further, data transfer between the processor 91 and the input device may be mediated by the input interface 95.

The communication interface 96 is connected to a higher-level system such as another computer or server through a network. The host system transmits the phase distribution of the display information used in each embodiment to the computer 90 via the communication interface 96. The host system may generate the phase distribution used in each embodiment by itself, or may acquire it from another system or device.

Further, the computer 90 may be equipped with a display device for displaying information. When a display device is provided, it is preferable that the computer 90 is provided with a display control device (not shown) for controlling the display of the display device. The display device may be connected to the computer 90 via the input interface 95.

Further, the computer 90 may be provided with a reader / writer, if necessary. The reader / writer is connected to the bus 99, and reads a data program from the recording medium and writes the processing result of the computer 90 to the recording medium between the processor 91 and a recording medium (program recording medium) (not shown). Mediate. The recording medium can be realized by, for example, a semiconductor recording medium such as an SD (Secure Digital) card or a USB (Universal Serial Bus) memory. Further, the recording medium may be realized by a magnetic recording medium such as a flexible disk, an optical recording medium such as a CD (Compact Disk) or a DVD (Digital Versatile Disc), or another recording medium.

The above is an example of the hardware configuration for enabling the control device according to each embodiment. The hardware configuration of FIG. 35 is an example of the hardware configuration for enabling the display device according to the present embodiment, and does not limit the scope of the present invention. Further, a processing program for causing a computer to execute processing in the display device according to the present embodiment is also included in the scope of the present invention. Further, a program recording medium on which a processing program according to an embodiment of the present invention is recorded is also included in the scope of the present invention.

(Use scene)
Finally, an example of a usage scene of the display device and the display system according to each embodiment of the present invention will be given. In the following usage scenes, an example using the display device 3 according to the third embodiment is shown, but the display devices 1 to 7 and the eighth embodiment according to the first to seventh embodiments are shown. Any of the display systems 8 according to the above may be applied.

FIG. 36 assumes a usage scene in which the display device according to the embodiment of the present invention is applied to a weather forecast.

The sub-screens 31-1 to 3 display the display information 111-1 to 3 of the altitude clouds associated with the sub-screens 31-1 to 3. The sub-screens 31 to 1 to 3 show the traveling direction of the cloud and the expansion of the cloud. According to the example of FIG. 36, since the cloud state can be displayed for each altitude, the subsequent weather state can be grasped more intuitively.

According to the usage scene of FIG. 36, a user such as a weather forecaster can more intuitively grasp the past, present, and future weather conditions. Further, according to the usage scene of FIG. 36, a user such as a weather forecaster who broadcasts weather information on a television broadcast can explain so that the viewer can grasp the weather condition more intuitively.

FIG. 37 assumes a usage scene in which the display device according to the embodiment of the present invention is applied to an airport control system.

It is assumed that the aircraft to be displayed is flying at the altitude associated with the subscreen 31-2. The display information 112-1 of the aircraft is displayed on the sub-screen 31-2. Here, it is assumed that another flock of birds to be displayed is observed at an altitude corresponding to subscreen 31-2. At this time, the display information 112-2 of the flock of birds is displayed on the sub-screen 31-2.

When the aircraft display information 112-1 and the bird flock display information 112-2 are heading toward the same point, the aircraft display information 112-1 and the bird flock display are displayed on the sub-screen 31-2. It is displayed that the information 112-2 and the information 112-2 move toward the same position. In this case, in real space, the aircraft and the bird may collide. In such a case, the user of the control system may call attention to the aircraft or threaten a flock of birds based on the display information of the display device 3.

According to the usage scene of FIG. 37, a user such as an airport controller can more intuitively grasp the situation around the airport in addition to controlling the flight state of the aircraft.

FIG. 38 assumes a usage scene in which the display device according to the embodiment of the present invention is applied to the fishing industry.

On each of the sub-screens 31-1 to 3, display information 113-1 to 3 of the school of fish at the water depth associated with each of the sub-screens 31-1 to 3 is displayed. The school of fish may be acquired by, for example, a fish finder.

For example, on the sub-screen 31-1 the predicted traveling direction of the school of fish is displayed as display information 113-1. For example, on the sub-screen 31-2, display information 113-2 indicating that a large school of fish is moving in a certain direction is displayed. For example, on the sub-screen 31-3, display information 113-3 indicating that a small school of fish is migrating is displayed. Further, although not shown in FIG. 38, display information such as crabs and shrimp on the seabed may be displayed on the surface of the three-dimensional display unit 50.

According to the usage scene of FIG. 38, a user such as a fisherman can grasp a school of fish in water more intuitively than a two-dimensional screen.

The above-mentioned usage scenes of FIGS. 36 to 38 show application examples of the display device and the display system according to each embodiment of the present invention, and do not limit the application range of the present invention.

Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the structure and details of the present invention within the scope of the present invention.

This application claims priority on the basis of Japanese application Japanese Patent Application No. 2015-142689 filed on July 17, 2015, the entire disclosure of which is incorporated herein by reference.

1, 2, 3, 4, 5, 6, 7 Display device 8 Display system 10 Projection device 11 Light source 12 Light source drive unit 15 Spatial modulation element 16 Modulation element control unit 18 Projection unit 20 Control device 21 Data reception unit 22 Projection condition setting Unit 23 Display pattern storage unit 24 Projection condition output unit 30 Screen 31 Subscreen 41 Support 42, 43 Variable support 50 Solid display 51 Pin 52 Cover 60 Stage 61 Object 62 Variable support 70 Imaging device 71 Imaging element 73 Image processing Processor 75 Internal memory 77 Data output unit 80 Management device 81 Observation data reception unit 82 Target determination unit 83 Target state extraction unit 84 Display target data generation unit 85 Display target data transmission unit 90 Computer 91 Processor 92 Main storage device 93 Auxiliary storage device 95 I / O interface 96 Communication interface 99 Bus

Claims (18)

A screen composed of a plurality of subscreens composed of transparent sheets in which phosphors emitted by light of a specific wavelength are dispersed, arranged in an out-of-plane direction at predetermined intervals, and a screen.
With multiple projection means
A control means for controlling the plurality of projection means so as to project desired display information on each of the plurality of subscreens is provided.
Each of the plurality of projection means
The control means is provided with a light source and a spatial modulation element including a display surface for displaying a phase distribution for displaying the desired display information, and is provided corresponding to any one of the plurality of subscreens. A display device that is supported by the sub-screen by a support that expands and contracts in the inter-phase direction of the sub-screen according to the control of the control means, and projects the desired display information onto the corresponding sub-screen according to the control of the control means. .. The subscreen is supported by a support that expands and contracts under the control of the control means.
The display device according to claim 1, wherein the control means changes the distance between the sub-screens by controlling the expansion and contraction of the support. The display device according to claim 1 or 2, wherein the control means changes the height of the projection means with respect to the subscreen by controlling the expansion and contraction of the support. The display device according to any one of claims 1 to 3, further comprising a three-dimensional display means for mechanically changing the surface shape. The stereoscopic display means
With a stand
A plurality of pins arranged in the same direction on the main surface side of the table, and
Movable mechanisms installed on the plurality of pins and
The plurality of pins have an elastic cover that covers the upper part.
The control means
The display device according to claim 4, wherein the movable mechanism associated with the plurality of pins is individually controlled to three-dimensionally change the surface shape of the three-dimensional display means. The stereoscopic display means
The display device according to claim 4 or 5, which is arranged at the bottom of the screen. A screen composed of a plurality of subscreens composed of transparent sheets in which phosphors emitted by light of a specific wavelength are dispersed, arranged in an out-of-plane direction at predetermined intervals, and a screen.
With multiple projection means
A control means for controlling the plurality of projection means so as to project desired display information on each of the plurality of subscreens.
A stage supported by a support that expands and contracts according to the control of the control means is provided.
The screen is open at a position through which the stage passes.
Each of the plurality of projection means
The control means is provided with a light source and a spatial modulation element including a display surface for displaying a phase distribution for displaying the desired display information, and is provided corresponding to any one of the plurality of subscreens. A display device that projects the desired display information onto the corresponding sub-screen according to the control of the above. The display device according to claim 7, wherein an object is arranged on the stage. The display device according to claim 7 or 8, wherein the plurality of projection means project desired display information onto the stage. An imaging means for imaging the screen is provided.
The control means
The projection means is controlled so as to project the user interface on which the operation keys are arranged on the screen, the imaging means is controlled so as to image the screen, and the image data captured by the imaging means is analyzed. The display device according to any one of claims 1 to 9, wherein the operation position on the screen is determined, and the operation content is recognized by associating the operation position with the operation key. The display device according to any one of claims 1 to 10, wherein the light absorber is arranged in the optical path of the 0th-order light included in the light projected by the projection means. The projection means
The display device according to any one of claims 1 to 11, further comprising a projection lens that corrects the distortion of the image projected on the sub-screen and projects the image. A screen composed of a plurality of subscreens composed of transparent sheets in which phosphors emitted by light of a specific wavelength are dispersed, arranged in an out-of-plane direction at predetermined intervals, and a screen.
With multiple projection means
A control means for controlling the plurality of projection means so as to project desired display information on each of the plurality of subscreens is provided.
Each of the plurality of projection means
The control means is provided with a light source and a spatial modulation element including a display surface for displaying a phase distribution for displaying the desired display information, and is provided corresponding to any one of the plurality of subscreens. The desired display information is projected onto the corresponding sub-screen according to the control of the above.
A display device for arranging a light absorber in an optical path of 0th order light that has passed through an opening formed at a position where an optical path of 0th order light included in the light projected by the projection means intersects with the screen. The display device according to claim 11, wherein a mirror is arranged in the optical path of the 0th-order light included in the light projected by the projection means, and the light absorber is arranged in the optical path of the 0th-order light reflected by the mirror. The display device according to any one of claims 1 to 14, wherein at least two transparent sheets in which phosphors emitted by light having different wavelengths are dispersed are superposed to form the sub-screen. A screen composed of a plurality of subscreens composed of transparent sheets in which phosphors emitted by light of a specific wavelength are dispersed, arranged in an out-of-plane direction at predetermined intervals, and a screen.
With multiple projection means
A control means for controlling the plurality of projection means so as to project desired display information on each of the plurality of subscreens is provided.
Each of the plurality of projection means
The control means is provided with a light source and a spatial modulation element including a display surface for displaying a phase distribution for displaying the desired display information, and is provided corresponding to any one of the plurality of subscreens. The desired display information is projected onto the corresponding sub-screen according to the control of the above.
The sub-screen is formed by stacking at least two transparent sheets in which phosphors emitted by light of different wavelengths are dispersed, and the optical path of the 0th-order light included in the light projected from the projection means is the sub screen. A display device that is configured to be off the screen. The display device according to claim 16, wherein the projection means projects projected light onto at least two of the sub-screens. A management means that acquires observation data in a specific range, extracts display target data related to the display target from the acquired observation data, and transmits the extracted display target data.
A screen configured by arranging a plurality of subscreens composed of transparent sheets in which phosphors emitted by light of a specific wavelength are dispersed at predetermined intervals in the out-of-plane direction, a plurality of projection means, and the above. A control means for controlling the plurality of projection means so as to project desired display information on each of the plurality of screens, and
A display means that receives the display target data from the management means and displays the desired display information based on the received display target data.
Each of the plurality of projection means
The control means is provided with a light source and a spatial modulation element including a display surface for displaying a phase distribution for displaying the desired display information, and is provided corresponding to any one of the plurality of subscreens. A display system that is supported by the sub-screen by a support that expands and contracts in the inter-phase direction of the sub-screen according to the control of the control means, and projects the desired display information onto the corresponding sub-screen according to the control of the control means. ..

Images